I wonder if a flash freeze freezer would better for freezing.More reading....
Pre-Freeze Product
The best rosin extraction comes from frozen product. Partially this helps with preserving flower and the trichomes from break down. This preserves the quality and amount of the terpenes.
Ideally, freshly trimmed cannabis should be frozen after collection without drying, then within a 24-36 hour range should be extracted.
Even if cannabis comes pre-dried, freezing before extraction will help prevent certain components which are water soluble from entering.